Korea Advanced Institute of Science and Technology

Lg Chem, Ltd

Ali Coskun

Jang Wook Choi

Doo Kyung Yang

Min Chul Jang

Byoung Kuk Son

Sung Hun Choi

Tae Woo Kwon

The present disclosure provides a rotaxane polymer binder containing a polymer based on a rotaxane structure. The polymer binder may further contain a polymer cross-linked with a polar polymer. The polar polymer may be a polymer containing the element F, O or N in a functional group and having high polarity. In addition, the present disclosure provides an electrode containing the rotaxane polymer binder as a binder for a lithium secondary battery, and a secondary battery containing the electrode.

Rotaxane polymer binder for lithium secondary battery, electrode comprising same, and secondary battery comprising same

The present invention relates to a polymer-sulfur copolymer, a preparation method thereof, and a lithium-sulfur battery including the same. In the case of the polymer-sulfur copolymer according to the present invention, since the carrier is polymerized, there is no possibility that the carrier is eluted, and since the sulfur is covalently bonded to the polymer and uniformly distributed in a certain size in the copolymer, when used as a positive electrode active material for the lithium-sulfur battery, the problem of elution of the polysulfide can be improved. In addition, the polymer-sulfur copolymer according to the present invention has a high sulfur impregnation amount, thereby making it possible to realize a high capacity battery.

Polymer-sulfur copolymer, method for preparing same, and lithium-sulfur battery comprising same

Growing community of inventors

Daejeon, South Korea

Ali Coskun